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Questions before lecture 8

Questions before lecture 8 - 5 Go back to your notes from...

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Questions before lecture 8 1. biological oxidation of carbon produces ATP by substrate-level phosphorylation, reduced electron carriers, and CO2. Given that most chemical reactions are reversible, what do you suppose is consumed when CO2 is biologically reduced to glucose? 2. What is consumed and produced in glycolysis? If you started out with pyruvate, what would you consume if you ran glycolysis backwards? 3. What is consumed and produced in the Krebs cycle? If you started out with CO2 and a four carbon dicarboxylic acid, what would you consume if you ran the Krebs cycle backwards? 4. Is a molecule NADPH produced by a photosystem in any way different from a molecule of NADPH produced by the pentose phosphate pathway?
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Unformatted text preview: 5. Go back to your notes from Bis1A or Bis2A for the Calvin cycle. Just looking at the Calvin cycle (or the “Dark Reactions of Photosynthesis”), what is consumed? What is produced? Is light required for the Dark reactions? 6. Go back to your notes from Bis1A or 2A for the Calvin cycle. What effect does O2 have on the Calvin cycle? (Hint: in discussing the Calvin cycle, is O2 even mentioned?) 7. The reduction of NAD+ to NADH by carbohydrates is spontaneous. The reduction of carboxylic acids to carbohydrates by NADPH is spontaneous. Arrange the NAD+/NADH, NADP/NADPH, and carboxylic acid/carbohydrate redox couples in order on a redox table....
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